Задача на массив строк и сортировка слов

#include "iostream.h"
#include "conio.h"
#include "string.h"
 
int main()
{char **s;
int i,n;
cout<<"Vvedite kol-vo strok \n";
cin>>n;
s=new char*[n];
cout<<"\nVvedite stroki\n";
for (i=0; i<=n; ++i)
{ s[i]=new char[21];
cin.getline(s[i],21);}
cout<<"\nVivod vvedennih strok\n";
for (i=0; i<=n; ++i)
{cout<<s[i]<<endl; }
 
 char *temp;                      //sortujemo
  for (i=0; i<=n-1;++i)
  for (int j=i+1; j<=n;++j)
  if (strlen(s[i])>strlen(s[j]))
  {temp=s[i];
  s[i]=s[j];
  s[j]=temp;}
  cout<<"\npislya sortirovki strok po neubivaniju po dline \n";
  for (i=0; i<=n;++i) cout<<s[i]<<endl;
  getch();
 
 
cout<<"\nVidelyaem slova iz strok \n";
char *p,**p1;
int j;
p1=new char*[n];
for (i=0; i<=n; ++i)
{ p1[i]=new char[21];}
 
for (i=0; i<=n; ++i)
{p=strtok(s[i]," ");
while(p)
{cout<<p<<endl;
p=strtok(NULL," "); }
 }
 
 
 //prevrashaem slova v massiv
 for (i=0; i<=n; ++i)
 for (j=0; j<=n; ++j)
 
 p1[i][j]=p[i];     //PROBLEMA
 
 for (i=0; i<=n; ++i)
 {
 for (j=0; j<=n; ++j)
 cout<<p1[i][j]<<" ";
    cout<<endl;}
 
 
 
 getch();
 for (i=0; i<=n; ++i)
    delete[] s[i];
    delete[] s;
return 0;}